On the first app I created and added the domain “wp.bohan.co”, it worked.
I deleted it and re-created it with the same app name.
However, I can’t get the SSL cert issued after I re-added the same domain.
For experiment I added a new domain “hp.manyou.io” and that worked.
I can be sure that the DNS A/AAAA/CNAME records are configured correctly so I doubt there’re some cache or internal issues.
Thanks in advance.